钾长石湿法提钾工艺研究

根据离子交换反应原理，选取钾长石与磷矿、硫酸在水热反应釜中反应，对钾长石与磷矿、硫酸反应的提钾工艺进行了研究，为开发利用钾长石提钾工业应用提供理论依据。实验表明，各影响因素对钾长石中钾溶出率的影响由大到小依次为：原料配比、硫酸浓度、反应时间、硫酸用量、反应温度。适宜工艺条件为：钾长石与磷矿质量比为0.8 ∶KG-*3]1，硫酸用量为4 mL/g，硫酸质量分数为70%，反应温度为160 ℃，反应时间为4 h。在此条件下，钾溶出率可以达到74.1%。

Study on extraction of potassium from potassium feldspar by wet process

Based on ion exchange theory,the technology of extracting potassium by reaction among potassium feldspar,phosphorite,and sulfuric acid in a hydrothermal reactor was studied,which provided a theoretical basis for industrial application of the extraction of potassium from potassium feldspar.Experiments showed that the order of influence factors of potassium dissolution rate was as follows:raw material mix ratio>concentration of sulfuric acid>reaction time>dosage of sulfuric acid>reaction temperature.Suitable ...